Grain-car door.



A. G. McCORMACK.

GRAIN CAR DOOR. v APPLICATION FILED was, I914.

Patehted June 20, 1916.

. 3 SHEETS-SHEET1.

Tm: COLUMBIA PLANOEIRAPH co., WASHINGTON, n. c-

A. e. McCORMACK.

GRAIN CAR DOOR.

APPLICATION FILED AUG.3, 1914.

Patented June 20, 1916.

3 SHEETSSHEET 2.

WITNESSES F/G4 INVENTOR Wait, ANGUS.G= MCCORMACK,

THE cohunmm IWOORAPH c0, WASHINGTON, n. c.

A. G. McCORMACK.

GRAIN CAR DOOR.

APPLICATION FILED AUG-3, I914.

Patented June 20, 1916.

3 SHEETS-SHEET 3.

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MY/[NTO/Q.

A NG U6. 6. MCORIWACI THE COLUMBIA P WASHINGTON n C ANGUS GILBERT MGCORMACK, 015 FORT ARTHUR, ONTARIO, CANADA.

GRAIN-CAR DOOR.

amas.

Specification of Letters Patent.

Patented June 211, 1916.

Application filed August 3, 1914. Serial No. 854,796.

To all whom it may concern:

Be it known that I, ANGUS GILBERT Mo- CoRMAoK, of the town of Port Arthur, in the district of Thunder Bay, in the Province of Ontario, Canada, have invented certain new and useful Improvements in Grain- Car Doors, of which the following is the specification.

My invention relates to improvements in grain car doors and the object of the invention is to provide a simple construction of car door which will be absolutely grain tight, which will not be liable to great damage during handling which may be easily opened and closed and in which the body portion of the door is removable and replaceable when necessary and it consists essentially of vertical guide-ways supported by the usual posts of the doorway and peculiarly constructed pocket members located at the upper end of each guide-way, a grain door comprising a plurality of sections arranged one above the other so that the longitudinal edges of adjacent sections abut opposing channel members into which the vertical end edges of each door section fit, guide members formed integral with each channel member, each guide member being provided with lateral flanges having edge notches, lug portions carried at the side of the guide-ways and co-acting with the notches, truss rods connecting the channel members together and gravity catches carried by the car roof designed to automatically engage with the lower edge of each grain door section when raised to the open position in proximity to the car roof as hereinafter more particularly explained by the following specification.

Figure 1, is a perspective view of my grain door in the closed position looking at the inside of the car and having a portion of the channel member B broken away and in section. Fig. 2, is a plan section through the grain door and guide-ways and side posts of the car.v Fig. 3, is a vertical section showing my grain door in the open position. Fig. 1, is an enlarged perspective detail of my gravity catch and a portion of the grain door approaching the looking position. Fig. 5, is a similar view to Fig. 4, showing the gravity catch in the position it assumes in the act of locking. Figs. 6 and 7 are perspective details of the plates C and C. Fig. 8, is a perspective detail of the plates shown in Figs. 6 and 7 and the slide E partially swung out therefrom. Fig. 9, is a perspective detail of the slide E. Fig. 10, is an enlarged sectional v1ew on line zv-y Fig. 1.

In the drawings like letters of reference lndlcate corresponding parts in each figure. A and A are the side posts of a car form- 1ng the car door opening. A is the top plate supported from the side post and A is a portion of the car floor.

B and B are two opposing channel members forming a vertical guide-way secured to each of the side posts of the car door, such guide-way extending vertically upwardly in proximity to the top level of the grain door.

C and C are vertical plates which extend upwardly from the top of the channel members B and Bto the top of the car door, the plates being spaced apart so as to form a vertical channel C being a continuation of the channel formed by the members B and and B.

C and C are pocket members formed integral with the plates C and C. The pocket members C and C are provided with inwardly extending upwardly abutting portions C which are connected together by a cross bolt C such abutting portion holding the major portion of the pocket members spaced'apart thereby forming a vertical slot O" extending downwardly therefrom to the bottom of the pocket. Each member C and C is provided with inwardly curved partitions C". I do not describe these partitions further as this form of pocket forms the subject matter of allowed United States application No. 717,908, dated August 30th, 1912, and Canadian Patent No. 118,213, dated 27th of May 1913. The lower end of each pocket member C and C is provided with a curved portion C C is an upwardly curved tongue portion extending from the plate C below the pocket for a purpose which will hereinafter appear.

C and C are supplemental lugs which extend outwardly from the plate C over the channel C D is my grain door. The grain door 1) comprises a plurality of sections preferably three in number and designated D, D and D E is a T-slide member comprising a portion E extending outwardly at right angles an upper minor portion E and a lower maj or portion E into which extends notches E E are vertical channels formed preferably integral with the portion E, each channel facing inwardly so as tooppose a Similar channel on the opposite side of the car door opening.- The sections D, D and D hereinbefore described are preferably formed of wood or other comparatively thin material such as sheet metal which fits at its vertical side edges into the channel E Each section D, D and D is provided with vertical reinforcing members D carrying blocks D 7 I D are truss rods which bear against the blocks D and extendattheir ends through 7 wardly.

the channel members E as indicated particularly in Fig. 2 of the drawings, the end ofthe truss rods being secured by nuts D".

F are metal strips secured along the lower edge of each grain door section so as to overlap the under face of the next adjacent section. The lowermost strip F, of course, bearing at its lower edge against the car floor. V I

'H is a gravity catch which'is carried by a beam 2 forming part of the car roof. The catch H comprises the bar member Hhavingslots H and H The slot H is provided with a lateral extension H The bar H is also provided with anotch H formed in the edge of the catch approaching 'the'car door. The lower end of the bar is curved rearwardly from the notch I-IT down- H and H are screws secured in the beam .2 and extending through the slots H and H the bar H being held freely in position by means of the screw 6. 7 Having now particularly described the principalparts involved in my invention I will. briefly describe the operation of the same. When it is desired to open the grain door the bottom section is priedup in the usual manner such as that described in my- 7 previous allowed United States application and Canadian patent hereinbefore referred to. The grain pressureis thus relieved by the grain'passing beneath the gra n door.

;As.so'on' as the door is free the uppermost section is raised vertically until the portion E enters the uppermost pocket formed by the pocket portions C and C. The door section is then swung inwardly until the lower edge thereof engages the bar I-I forcing itupwardly in the position shown in Fig. 5 of the drawings. When in this position the edge of'the door section formed by the strip F engages the notch H of the bar, the bar H returning to its normal position as shown in Fig. 3 of the drawin s so that the notch H engages the strip It will thus be seen that the weight of the door itself holds the catch bar H in the locking position and that there will be no danger of the door section being freed therefrom until it is intentionally freed. The other remaining door sections D and D may then be raised in a similar manner and swung inward when the upper end portions enter the corresponding pocket formed by the partitions C" of the pocket members as described in my previous patent hereinbefore referred to and when the notches E of the corresponding door section come into position to pass the lugs C and C The lugs (1 and C prevent the inward swing of the door section until it comes to its fully open position. When it is desired to close the door all that it is necessary to do is to free each section from the catch bar H and swing it downwardly into a vertical position. When in the vertical position the door section will drop by gravity to its closed position. The lugs C as they pass through the uppermost of the notches E serve as a support for the door section as it is swung upwardly to the open position and until the portion E is definitely in engagement with the pocket section as heregrain door section become damaged all that i it is necessary to do is to remove the truss rods D and slide such section outwardly from its holding groove E. A-new section may then be placed in position and the truss rod refastened.

' From this description it will be seen that I have devised a very simple form of car door which is not liable to become damaged under rough use and which if it should become damaged may be easily replaced at a minimum expense and in which means have been provided by which the door section is positively locked in its open position without danger of its being accidentally freed therefrom.

What I claim as my invention is 1. In a grain car door, the combination with the side guideways located at each side of the door opening, of guide members slidable vertically therein and each having an inwardly extending channeled portion formed integral therewith, the channeled portion of the guide member on one side of and through channeled portions of the guide members, and nuts screwed on to the ends of the rods against the channeled portions.

2. In a grain door, the combination with the side posts of the car opening, of vertical channel members secured to the inner side of the side posts and forming vertical guideways extending from the bottom of the side posts in proximity to a level with the top of the grain door, plates forming extension guideways, pocket members formed integral with and located at the upper end of each of the aforesaid plates, projecting portions extending from the plates and overhanging the extension guideways, grain door sections, slide members secured to the end vertical edges of each section and having laterally extending flanges each comprising an upper portion designed to enter the pocket member and a. lOWer portion having notches designed to be brought opposite to the projecting portions overhanging the extension guideways when the upper portion of the slide member enters the pocket member.

3. In a grain car door, the combination with the side posts of the car door opening, of vertical channel members secured to and forming guideways at the inner side of each side post and extending from the bottom of each side post to a level with the edge of the grain door, plates forming extension guideways, pocket members formed integral with and located at the upper end of each of the aforesaid plates, lugs and an extension arc-shaped tongue member extending from one of the plates forming extension guideways, grain door sections, slide members secured to each and vertical edge of each section and having laterally extending flanges each comprising an upper portion designed to enter the corresponding pocket member and a lower portion having notches and designed to be brought opposite the lugs and tongue of the extension guide- Ways when the upper portion of the slide member enters the pocket member.

ANGUS GILBERT MGCOEMAGK.

Witnesses C. PENNOLK, M. EGAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

